[catagits/Catalyst-Runtime.git] / lib / Catalyst / Engine / HTTP.pm

package Catalyst::Engine::HTTP;

use strict;
use base 'Catalyst::Engine::CGI';
use Data::Dump qw(dump);
use Errno 'EWOULDBLOCK';
use HTTP::Date ();
use HTTP::Headers;
use HTTP::Status;
use NEXT;
use Socket;
use IO::Socket::INET ();
use IO::Select       ();

# For PAR
require Catalyst::Engine::HTTP::Restarter;
require Catalyst::Engine::HTTP::Restarter::Watcher;

use constant CHUNKSIZE => 64 * 1024;
use constant DEBUG     => $ENV{CATALYST_HTTP_DEBUG} || 0;

=head1 NAME

Catalyst::Engine::HTTP - Catalyst HTTP Engine

=head1 SYNOPSIS

A script using the Catalyst::Engine::HTTP module might look like:

    #!/usr/bin/perl -w

    BEGIN {  $ENV{CATALYST_ENGINE} = 'HTTP' }

    use strict;
    use lib '/path/to/MyApp/lib';
    use MyApp;

    MyApp->run;

=head1 DESCRIPTION

This is the Catalyst engine specialized for development and testing.

=head1 METHODS

=head2 $self->finalize_headers($c)

=cut

sub finalize_headers {
    my ( $self, $c ) = @_;
    my $protocol = $c->request->protocol;
    my $status   = $c->response->status;
    my $message  = status_message($status);
    
    my @headers;
    push @headers, "$protocol $status $message";
    
    $c->response->headers->header( Date => HTTP::Date::time2str(time) );
    $c->response->headers->header( Connection => 'close' );
    $c->response->headers->header( Status => $status );
    
    push @headers, $c->response->headers->as_string("\x0D\x0A");
    
    # Buffer the headers so they are sent with the first write() call
    # This reduces the number of TCP packets we are sending
    $self->{_header_buf} = join("\x0D\x0A", @headers, '');
}

=head2 $self->finalize_read($c)

=cut

sub finalize_read {
    my ( $self, $c ) = @_;

    # Never ever remove this, it would result in random length output
    # streams if STDIN eq STDOUT (like in the HTTP engine)
    *STDIN->blocking(1);

    return $self->NEXT::finalize_read($c);
}

=head2 $self->prepare_read($c)

=cut

sub prepare_read {
    my ( $self, $c ) = @_;

    # Set the input handle to non-blocking
    *STDIN->blocking(0);

    return $self->NEXT::prepare_read($c);
}

=head2 $self->read_chunk($c, $buffer, $length)

=cut

sub read_chunk {
    my $self = shift;
    my $c    = shift;
    
    # If we have any remaining data in the input buffer, send it back first
    if ( $_[0] = delete $self->{inputbuf} ) {
        my $read = length( $_[0] );
        DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n";
        return $read;
    }

    # support for non-blocking IO
    my $rin = '';
    vec( $rin, *STDIN->fileno, 1 ) = 1;

  READ:
    {
        select( $rin, undef, undef, undef );
        my $rc = *STDIN->sysread(@_);
        if ( defined $rc ) {
            DEBUG && warn "read_chunk: Read $rc bytes from socket\n";
            return $rc;
        }
        else {
            next READ if $! == EWOULDBLOCK;
            return;
        }
    }
}

=head2 $self->write($c, $buffer)

Writes the buffer to the client. Can only be called once for a request.

=cut

sub write {
    my ( $self, $c, $buffer ) = @_;
    
	# Avoid 'print() on closed filehandle Remote' warnings when using IE
	return unless *STDOUT->opened();
	
	my $ret;
	
	# Prepend the headers if they have not yet been sent
	if ( my $headers = delete $self->{_header_buf} ) {
	    DEBUG && warn "write: Wrote headers and first chunk (" . length($headers . $buffer) . " bytes)\n";
	    $ret = $self->NEXT::write( $c, $headers . $buffer );
    }
    else {
        DEBUG && warn "write: Wrote chunk (" . length($buffer) . " bytes)\n";
        $ret = $self->NEXT::write( $c, $buffer );
    }
    
    if ( !$ret ) {
        $self->{_write_error} = $!;
    }
    
    return $ret;
}

=head2 run

=cut

# A very very simple HTTP server that initializes a CGI environment
sub run {
    my ( $self, $class, $port, $host, $options ) = @_;

    $options ||= {};
    
    $self->{options} = $options;

    if ($options->{background}) {
        my $child = fork;
        die "Can't fork: $!" unless defined($child);
        exit if $child;
    }

    my $restart = 0;
    local $SIG{CHLD} = 'IGNORE';

    my $allowed = $options->{allowed} || { '127.0.0.1' => '255.255.255.255' };
    my $addr = $host ? inet_aton($host) : INADDR_ANY;
    if ( $addr eq INADDR_ANY ) {
        require Sys::Hostname;
        $host = lc Sys::Hostname::hostname();
    }
    else {
        $host = gethostbyaddr( $addr, AF_INET ) || inet_ntoa($addr);
    }

    # Handle requests

    # Setup socket
    my $daemon = IO::Socket::INET->new(
        Listen    => SOMAXCONN,
        LocalAddr => inet_ntoa($addr),
        LocalPort => $port,
        Proto     => 'tcp',
        ReuseAddr => 1,
        Type      => SOCK_STREAM,
      )
      or die "Couldn't create daemon: $!";

    my $url = "http://$host";
    $url .= ":$port" unless $port == 80;

    print "You can connect to your server at $url\n";

    if ($options->{background}) {
        open STDIN,  "+</dev/null" or die $!;
        open STDOUT, ">&STDIN"     or die $!;
        open STDERR, ">&STDIN"     or die $!;
        if ( $^O !~ /MSWin32/ ) {
             require POSIX;
             POSIX::setsid()
                 or die "Can't start a new session: $!";
        }
    }

    if (my $pidfile = $options->{pidfile}) {
        if (! open PIDFILE, "> $pidfile") {
            warn("Cannot open: $pidfile: $!");
        }
        print PIDFILE "$$\n";
        close PIDFILE;
    }

    my $pid = undef;
    
    # Ignore broken pipes as an HTTP server should
    local $SIG{PIPE} = 'IGNORE';
    
    # Restart on HUP
    local $SIG{HUP} = sub { 
        $restart = 1;
        warn "Restarting server on SIGHUP...\n";
    };
    
    LISTEN:
    while ( !$restart ) {
        while ( accept( Remote, $daemon ) ) {        
            DEBUG && warn "New connection\n";

            select Remote;

            Remote->blocking(1);
        
            # Read until we see a newline
            $self->{inputbuf} = '';
        
            while (1) {
                my $read = sysread Remote, my $buf, CHUNKSIZE;
            
                if ( !$read ) {
                    DEBUG && warn "EOF or error: $!\n";
                    next LISTEN;
                }
            
                DEBUG && warn "Read $read bytes\n";
                $self->{inputbuf} .= $buf;
                last if $self->{inputbuf} =~ /(\x0D\x0A?|\x0A\x0D?)/s;
            }

            my ( $method, $uri, $protocol ) = $self->_parse_request_line;
        
            DEBUG && warn "Parsed request: $method $uri $protocol\n";
        
            next unless $method;

            unless ( uc($method) eq 'RESTART' ) {

                # Fork
                if ( $options->{fork} ) { next if $pid = fork }

                $self->_handler( $class, $port, $method, $uri, $protocol );
            
                if ( my $error = delete $self->{_write_error} ) {
                    DEBUG && warn "Write error: $error\n";
                    close Remote;
                    next LISTEN;
                }

                $daemon->close if defined $pid;
            }
            else {
                my $sockdata = $self->_socket_data( \*Remote );
                my $ipaddr   = _inet_addr( $sockdata->{peeraddr} );
                my $ready    = 0;
                foreach my $ip ( keys %$allowed ) {
                    my $mask = $allowed->{$ip};
                    $ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip);
                    last if $ready;
                }
                if ($ready) {
                    $restart = 1;
                    last;
                }
            }

            exit if defined $pid;
        }
        continue {
            close Remote;
        }
    }
    
    $daemon->close;
    
    DEBUG && warn "Shutting down\n";

    if ($restart) {
        $SIG{CHLD} = 'DEFAULT';
        wait;

        ### if the standalone server was invoked with perl -I .. we will loose
        ### those include dirs upon re-exec. So add them to PERL5LIB, so they
        ### are available again for the exec'ed process --kane
        use Config;
        $ENV{PERL5LIB} .= join $Config{path_sep}, @INC; 
        
        exec $^X . ' "' . $0 . '" ' . join( ' ', @{ $options->{argv} } );
    }

    exit;
}

sub _handler {
    my ( $self, $class, $port, $method, $uri, $protocol ) = @_;

    local *STDIN  = \*Remote;
    local *STDOUT = \*Remote;

    # We better be careful and just use 1.0
    $protocol = '1.0';

    my $sockdata    = $self->_socket_data( \*Remote );
    my %copy_of_env = %ENV;

    my $sel = IO::Select->new;
    $sel->add( \*STDIN );
    
    REQUEST:
        # Initialize CGI environment
        local %ENV = (
            PATH_INFO       => $path         || '',
            QUERY_STRING    => $query_string || '',
            REMOTE_ADDR     => $sockdata->{peeraddr},
            REMOTE_HOST     => $sockdata->{peername},
            REQUEST_METHOD  => $method || '',
            SERVER_NAME     => $sockdata->{localname},
            SERVER_PORT     => $port,
            SERVER_PROTOCOL => "HTTP/$protocol",
            %copy_of_env,
        );

    # Initialize CGI environment
    local %ENV = (
        PATH_INFO       => $path         || '',
        QUERY_STRING    => $query_string || '',
        REMOTE_ADDR     => $sockdata->{peeraddr},
        REMOTE_HOST     => $sockdata->{peername},
        REQUEST_METHOD  => $method || '',
        SERVER_NAME     => $sockdata->{localname},
        SERVER_PORT     => $port,
        SERVER_PROTOCOL => "HTTP/$protocol",
        %copy_of_env,
    );

    # Parse headers
    if ( $protocol >= 1 ) {
        $self->_parse_headers;
    }

    # Pass flow control to Catalyst
    $class->handle_request;
    
    DEBUG && warn "Request done\n";
    
    # XXX: We used to have a hack for keep-alive here but keep-alive
    # has no place in a single-tasking server like this.  Use HTTP::POE
    # if you want keep-alive.

    close Remote;
}

sub _parse_request_line {
    my $self = shift;

    # Parse request line    
    if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) {
        return ();
    }
    
    my $method = $1;
    my $uri    = $2;
    my $proto  = $3 || 'HTTP/0.9';
    
    return ( $method, $uri, $proto );
}

sub _parse_headers {
    my $self = shift;
    
    # Copy the buffer for header parsing, and remove the header block
    # from the content buffer.
    my $buf = $self->{inputbuf};
    $self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?|\x0A\x0D?\x0A\x0D?)//s;
    
    # Parse headers
    my $headers = HTTP::Headers->new;
    my ($key, $val);
    HEADER:
    while ( $buf =~ s/^([^\012]*)\012// ) {
        $_ = $1;
        s/\015$//;
        if ( /^([\w\-~]+)\s*:\s*(.*)/ ) {
            $headers->push_header( $key, $val ) if $key;
            ($key, $val) = ($1, $2);
        }
        elsif ( /^\s+(.*)/ ) {
            $val .= " $1";
        }
        else {
            last HEADER;
        }
    }
    $headers->push_header( $key, $val ) if $key;
    
    DEBUG && warn "Parsed headers: " . dump($headers) . "\n";

    # Convert headers into ENV vars
    $headers->scan( sub {
        my ( $key, $val ) = @_;
        
        $key = uc $key;
        $key = 'COOKIE' if $key eq 'COOKIES';
        $key =~ tr/-/_/;
        $key = 'HTTP_' . $key
            unless $key =~ m/\A(?:CONTENT_(?:LENGTH|TYPE)|COOKIE)\z/;
            
        if ( exists $ENV{$key} ) {
            $ENV{$key} .= ", $val";
        }
        else {
            $ENV{$key} = $val;
        }
    } );
}

sub _socket_data {
    my ( $self, $handle ) = @_;

    my $remote_sockaddr       = getpeername($handle);
    my ( undef, $iaddr )      = $remote_sockaddr 
        ? sockaddr_in($remote_sockaddr) 
        : (undef, undef);
        
    my $local_sockaddr        = getsockname($handle);
    my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr);

    # This mess is necessary to keep IE from crashing the server
    my $data = {
        peername  => $iaddr 
            ? ( gethostbyaddr( $iaddr, AF_INET ) || 'localhost' )
            : 'localhost',
        peeraddr  => $iaddr 
            ? ( inet_ntoa($iaddr) || '127.0.0.1' )
            : '127.0.0.1',
        localname => gethostbyaddr( $localiaddr, AF_INET ) || 'localhost',
        localaddr => inet_ntoa($localiaddr) || '127.0.0.1',
    };

    return $data;
}

sub _inet_addr { unpack "N*", inet_aton( $_[0] ) }

=head1 SEE ALSO

L<Catalyst>, L<Catalyst::Engine>.

=head1 AUTHORS

Sebastian Riedel, <sri@cpan.org>

Dan Kubb, <dan.kubb-cpan@onautopilot.com>

Sascha Kiefer, <esskar@cpan.org>

Andy Grundman, <andy@hybridized.org>

=head1 THANKS

Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent.

=head1 COPYRIGHT

This program is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.

=cut

1;
Commit	Line	Data
ca61af20	1	package Catalyst::Engine::HTTP;
45374ac6	2
45374ac6	3	use strict;
fbcc39ad	4	use base 'Catalyst::Engine::CGI';
4bb8bd62	5	use Data::Dump qw(dump);
fbcc39ad	6	use Errno 'EWOULDBLOCK';
055ff026	7	use HTTP::Date ();
06744540	8	use HTTP::Headers;
fbcc39ad	9	use HTTP::Status;
	10	use NEXT;
	11	use Socket;
6c7a1d2f	12	use IO::Socket::INET ();
b5ecfcf0	13	use IO::Select ();
45374ac6	14
71fd2e0f	15	# For PAR
	16	require Catalyst::Engine::HTTP::Restarter;
	17	require Catalyst::Engine::HTTP::Restarter::Watcher;
	18
333123ef	19	use constant CHUNKSIZE => 64 * 1024;
333123ef	20	use constant DEBUG => $ENV{CATALYST_HTTP_DEBUG} \|\| 0;
4bb8bd62	21
45374ac6	22	=head1 NAME
45374ac6	23
ca61af20	24	Catalyst::Engine::HTTP - Catalyst HTTP Engine
45374ac6	25
	26	=head1 SYNOPSIS
	27
ca61af20	28	A script using the Catalyst::Engine::HTTP module might look like:
45374ac6	29
	30	#!/usr/bin/perl -w
	31
ca61af20	32	BEGIN { $ENV{CATALYST_ENGINE} = 'HTTP' }
45374ac6	33
	34	use strict;
	35	use lib '/path/to/MyApp/lib';
	36	use MyApp;
	37
	38	MyApp->run;
	39
	40	=head1 DESCRIPTION
	41
	42	This is the Catalyst engine specialized for development and testing.
	43
fbcc39ad	44	=head1 METHODS
fbcc39ad	45
b5ecfcf0	46	=head2 $self->finalize_headers($c)
fbcc39ad	47
	48	=cut
	49
	50	sub finalize_headers {
	51	my ( $self, $c ) = @_;
	52	my $protocol = $c->request->protocol;
	53	my $status = $c->response->status;
	54	my $message = status_message($status);
055ff026	55
06744540	56	my @headers;
06744540	57	push @headers, "$protocol $status $message";
055ff026	58
055ff026	59	$c->response->headers->header( Date => HTTP::Date::time2str(time) );
1661e231	60	$c->response->headers->header( Connection => 'close' );
055ff026	61	$c->response->headers->header( Status => $status );
06744540	62
	63	push @headers, $c->response->headers->as_string("\x0D\x0A");
	64
	65	# Buffer the headers so they are sent with the first write() call
	66	# This reduces the number of TCP packets we are sending
	67	$self->{_header_buf} = join("\x0D\x0A", @headers, '');
fbcc39ad	68	}
fbcc39ad	69
b5ecfcf0	70	=head2 $self->finalize_read($c)
fbcc39ad	71
	72	=cut
	73
	74	sub finalize_read {
	75	my ( $self, $c ) = @_;
	76
	77	# Never ever remove this, it would result in random length output
	78	# streams if STDIN eq STDOUT (like in the HTTP engine)
4f5ebacd	79	*STDIN->blocking(1);
fbcc39ad	80
	81	return $self->NEXT::finalize_read($c);
	82	}
	83
b5ecfcf0	84	=head2 $self->prepare_read($c)
fbcc39ad	85
	86	=cut
	87
	88	sub prepare_read {
	89	my ( $self, $c ) = @_;
	90
	91	# Set the input handle to non-blocking
4f5ebacd	92	*STDIN->blocking(0);
fbcc39ad	93
	94	return $self->NEXT::prepare_read($c);
	95	}
	96
b5ecfcf0	97	=head2 $self->read_chunk($c, $buffer, $length)
fbcc39ad	98
	99	=cut
	100
	101	sub read_chunk {
	102	my $self = shift;
	103	my $c = shift;
4bb8bd62	104
	105	# If we have any remaining data in the input buffer, send it back first
	106	if ( $_[0] = delete $self->{inputbuf} ) {
	107	my $read = length( $_[0] );
	108	DEBUG && warn "read_chunk: Read $read bytes from previous input buffer\n";
	109	return $read;
	110	}
fbcc39ad	111
fbcc39ad	112	# support for non-blocking IO
4f5ebacd	113	my $rin = '';
4f5ebacd	114	vec( $rin, *STDIN->fileno, 1 ) = 1;
fbcc39ad	115
	116	READ:
	117	{
	118	select( $rin, undef, undef, undef );
4f5ebacd	119	my $rc = *STDIN->sysread(@_);
fbcc39ad	120	if ( defined $rc ) {
4bb8bd62	121	DEBUG && warn "read_chunk: Read $rc bytes from socket\n";
fbcc39ad	122	return $rc;
	123	}
	124	else {
	125	next READ if $! == EWOULDBLOCK;
	126	return;
	127	}
	128	}
	129	}
	130
00c99324	131	=head2 $self->write($c, $buffer)
	132
	133	Writes the buffer to the client. Can only be called once for a request.
	134
	135	=cut
	136
	137	sub write {
4bb8bd62	138	my ( $self, $c, $buffer ) = @_;
4bb8bd62	139
00c99324	140	# Avoid 'print() on closed filehandle Remote' warnings when using IE
	141	return unless *STDOUT->opened();
	142
4bb8bd62	143	my $ret;
	144
	145	# Prepend the headers if they have not yet been sent
	146	if ( my $headers = delete $self->{_header_buf} ) {
	147	DEBUG && warn "write: Wrote headers and first chunk (" . length($headers . $buffer) . " bytes)\n";
	148	$ret = $self->NEXT::write( $c, $headers . $buffer );
	149	}
	150	else {
	151	DEBUG && warn "write: Wrote chunk (" . length($buffer) . " bytes)\n";
	152	$ret = $self->NEXT::write( $c, $buffer );
	153	}
	154
	155	if ( !$ret ) {
	156	$self->{_write_error} = $!;
	157	}
	158
	159	return $ret;
00c99324	160	}
00c99324	161
b5ecfcf0	162	=head2 run
fbcc39ad	163
	164	=cut
	165
	166	# A very very simple HTTP server that initializes a CGI environment
	167	sub run {
37553dc8	168	my ( $self, $class, $port, $host, $options ) = @_;
fbcc39ad	169
4eeca0f2	170	$options \|\|= {};
3bcb3aae	171
3bcb3aae	172	$self->{options} = $options;
1cf1c56a	173
e1576f62	174	if ($options->{background}) {
	175	my $child = fork;
	176	die "Can't fork: $!" unless defined($child);
	177	exit if $child;
	178	}
	179
57a87bb3	180	my $restart = 0;
31b426c0	181	local $SIG{CHLD} = 'IGNORE';
fbcc39ad	182
1cf1c56a	183	my $allowed = $options->{allowed} \|\| { '127.0.0.1' => '255.255.255.255' };
6c7a1d2f	184	my $addr = $host ? inet_aton($host) : INADDR_ANY;
6c7a1d2f	185	if ( $addr eq INADDR_ANY ) {
fbcc39ad	186	require Sys::Hostname;
6c7a1d2f	187	$host = lc Sys::Hostname::hostname();
fbcc39ad	188	}
fbcc39ad	189	else {
6c7a1d2f	190	$host = gethostbyaddr( $addr, AF_INET ) \|\| inet_ntoa($addr);
fbcc39ad	191	}
6c7a1d2f	192
	193	# Handle requests
	194
	195	# Setup socket
	196	my $daemon = IO::Socket::INET->new(
	197	Listen => SOMAXCONN,
	198	LocalAddr => inet_ntoa($addr),
	199	LocalPort => $port,
	200	Proto => 'tcp',
	201	ReuseAddr => 1,
	202	Type => SOCK_STREAM,
	203	)
	204	or die "Couldn't create daemon: $!";
	205
	206	my $url = "http://$host";
	207	$url .= ":$port" unless $port == 80;
	208
fbcc39ad	209	print "You can connect to your server at $url\n";
fbcc39ad	210
e1576f62	211	if ($options->{background}) {
	212	open STDIN, "+</dev/null" or die $!;
	213	open STDOUT, ">&STDIN" or die $!;
	214	open STDERR, ">&STDIN" or die $!;
	215	if ( $^O !~ /MSWin32/ ) {
	216	require POSIX;
	217	POSIX::setsid()
	218	or die "Can't start a new session: $!";
	219	}
	220	}
	221
	222	if (my $pidfile = $options->{pidfile}) {
	223	if (! open PIDFILE, "> $pidfile") {
	224	warn("Cannot open: $pidfile: $!");
	225	}
	226	print PIDFILE "$$\n";
	227	close PIDFILE;
	228	}
	229
4bb8bd62	230	my $pid = undef;
	231
	232	# Ignore broken pipes as an HTTP server should
	233	local $SIG{PIPE} = 'IGNORE';
	234
b095458a	235	# Restart on HUP
	236	local $SIG{HUP} = sub {
	237	$restart = 1;
	238	warn "Restarting server on SIGHUP...\n";
	239	};
	240
4bb8bd62	241	LISTEN:
	242	while ( !$restart ) {
	243	while ( accept( Remote, $daemon ) ) {
	244	DEBUG && warn "New connection\n";
fbcc39ad	245
4bb8bd62	246	select Remote;
fbcc39ad	247
4bb8bd62	248	Remote->blocking(1);
4bb8bd62	249
1661e231	250	# Read until we see a newline
4bb8bd62	251	$self->{inputbuf} = '';
1661e231	252
	253	while (1) {
	254	my $read = sysread Remote, my $buf, CHUNKSIZE;
4bb8bd62	255
1661e231	256	if ( !$read ) {
	257	DEBUG && warn "EOF or error: $!\n";
	258	next LISTEN;
	259	}
	260
	261	DEBUG && warn "Read $read bytes\n";
	262	$self->{inputbuf} .= $buf;
	263	last if $self->{inputbuf} =~ /(\x0D\x0A?\|\x0A\x0D?)/s;
4bb8bd62	264	}
fbcc39ad	265
4bb8bd62	266	my ( $method, $uri, $protocol ) = $self->_parse_request_line;
	267
	268	DEBUG && warn "Parsed request: $method $uri $protocol\n";
	269
	270	next unless $method;
57a87bb3	271
4bb8bd62	272	unless ( uc($method) eq 'RESTART' ) {
57a87bb3	273
4bb8bd62	274	# Fork
4bb8bd62	275	if ( $options->{fork} ) { next if $pid = fork }
6c7a1d2f	276
4bb8bd62	277	$self->_handler( $class, $port, $method, $uri, $protocol );
	278
	279	if ( my $error = delete $self->{_write_error} ) {
	280	DEBUG && warn "Write error: $error\n";
	281	close Remote;
	282	next LISTEN;
	283	}
fbcc39ad	284
4bb8bd62	285	$daemon->close if defined $pid;
1cf1c56a	286	}
4bb8bd62	287	else {
	288	my $sockdata = $self->_socket_data( \*Remote );
	289	my $ipaddr = _inet_addr( $sockdata->{peeraddr} );
	290	my $ready = 0;
	291	foreach my $ip ( keys %$allowed ) {
	292	my $mask = $allowed->{$ip};
	293	$ready = ( $ipaddr & _inet_addr($mask) ) == _inet_addr($ip);
	294	last if $ready;
	295	}
	296	if ($ready) {
	297	$restart = 1;
	298	last;
	299	}
1cf1c56a	300	}
57a87bb3	301
4bb8bd62	302	exit if defined $pid;
	303	}
	304	continue {
	305	close Remote;
	306	}
fbcc39ad	307	}
4bb8bd62	308
6c7a1d2f	309	$daemon->close;
4bb8bd62	310
4bb8bd62	311	DEBUG && warn "Shutting down\n";
37553dc8	312
57a87bb3	313	if ($restart) {
60c38e3e	314	$SIG{CHLD} = 'DEFAULT';
6844bc1c	315	wait;
e37e3977	316
	317	### if the standalone server was invoked with perl -I .. we will loose
	318	### those include dirs upon re-exec. So add them to PERL5LIB, so they
	319	### are available again for the exec'ed process --kane
	320	use Config;
	321	$ENV{PERL5LIB} .= join $Config{path_sep}, @INC;
	322
1cf1c56a	323	exec $^X . ' "' . $0 . '" ' . join( ' ', @{ $options->{argv} } );
60c38e3e	324	}
57a87bb3	325
57a87bb3	326	exit;
fbcc39ad	327	}
fbcc39ad	328
6c7a1d2f	329	sub _handler {
	330	my ( $self, $class, $port, $method, $uri, $protocol ) = @_;
	331
6c7a1d2f	332	local STDIN = \Remote;
	333	local STDOUT = \Remote;
	334
	335	# We better be careful and just use 1.0
	336	$protocol = '1.0';
	337
	338	my $sockdata = $self->_socket_data( \*Remote );
	339	my %copy_of_env = %ENV;
	340
	341	my $sel = IO::Select->new;
	342	$sel->add( \*STDIN );
3bcb3aae	343
3bcb3aae	344	REQUEST:
db9db407	345	# Initialize CGI environment
	346	local %ENV = (
	347	PATH_INFO => $path \|\| '',
	348	QUERY_STRING => $query_string \|\| '',
	349	REMOTE_ADDR => $sockdata->{peeraddr},
	350	REMOTE_HOST => $sockdata->{peername},
	351	REQUEST_METHOD => $method \|\| '',
	352	SERVER_NAME => $sockdata->{localname},
	353	SERVER_PORT => $port,
	354	SERVER_PROTOCOL => "HTTP/$protocol",
	355	%copy_of_env,
	356	);
cf26c39c	357
1661e231	358	# Initialize CGI environment
	359	local %ENV = (
	360	PATH_INFO => $path \|\| '',
	361	QUERY_STRING => $query_string \|\| '',
	362	REMOTE_ADDR => $sockdata->{peeraddr},
	363	REMOTE_HOST => $sockdata->{peername},
	364	REQUEST_METHOD => $method \|\| '',
	365	SERVER_NAME => $sockdata->{localname},
	366	SERVER_PORT => $port,
	367	SERVER_PROTOCOL => "HTTP/$protocol",
	368	%copy_of_env,
	369	);
cf26c39c	370
1661e231	371	# Parse headers
	372	if ( $protocol >= 1 ) {
	373	$self->_parse_headers;
	374	}
6c7a1d2f	375
1661e231	376	# Pass flow control to Catalyst
1661e231	377	$class->handle_request;
cf26c39c	378
1661e231	379	DEBUG && warn "Request done\n";
3bcb3aae	380
1661e231	381	# XXX: We used to have a hack for keep-alive here but keep-alive
	382	# has no place in a single-tasking server like this. Use HTTP::POE
	383	# if you want keep-alive.
06744540	384
06744540	385	close Remote;
3bcb3aae	386	}
3bcb3aae	387
4bb8bd62	388	sub _parse_request_line {
4bb8bd62	389	my $self = shift;
6c7a1d2f	390
4bb8bd62	391	# Parse request line
	392	if ( $self->{inputbuf} !~ s/^(\w+)[ \t]+(\S+)(?:[ \t]+(HTTP\/\d+\.\d+))?[^\012]*\012// ) {
	393	return ();
	394	}
	395
	396	my $method = $1;
	397	my $uri = $2;
	398	my $proto = $3 \|\| 'HTTP/0.9';
	399
	400	return ( $method, $uri, $proto );
6c7a1d2f	401	}
6c7a1d2f	402
4bb8bd62	403	sub _parse_headers {
	404	my $self = shift;
	405
	406	# Copy the buffer for header parsing, and remove the header block
	407	# from the content buffer.
	408	my $buf = $self->{inputbuf};
	409	$self->{inputbuf} =~ s/.*?(\x0D\x0A?\x0D\x0A?\|\x0A\x0D?\x0A\x0D?)//s;
	410
	411	# Parse headers
	412	my $headers = HTTP::Headers->new;
	413	my ($key, $val);
	414	HEADER:
	415	while ( $buf =~ s/^([^\012]*)\012// ) {
	416	$_ = $1;
	417	s/\015$//;
	418	if ( /^([\w\-~]+)\s:\s(.*)/ ) {
	419	$headers->push_header( $key, $val ) if $key;
	420	($key, $val) = ($1, $2);
	421	}
	422	elsif ( /^\s+(.*)/ ) {
	423	$val .= " $1";
	424	}
	425	else {
	426	last HEADER;
	427	}
	428	}
	429	$headers->push_header( $key, $val ) if $key;
	430
	431	DEBUG && warn "Parsed headers: " . dump($headers) . "\n";
6c7a1d2f	432
4bb8bd62	433	# Convert headers into ENV vars
	434	$headers->scan( sub {
	435	my ( $key, $val ) = @_;
	436
	437	$key = uc $key;
	438	$key = 'COOKIE' if $key eq 'COOKIES';
	439	$key =~ tr/-/_/;
	440	$key = 'HTTP_' . $key
	441	unless $key =~ m/\A(?:CONTENT_(?:LENGTH\|TYPE)\|COOKIE)\z/;
	442
	443	if ( exists $ENV{$key} ) {
	444	$ENV{$key} .= ", $val";
	445	}
	446	else {
	447	$ENV{$key} = $val;
	448	}
	449	} );
6c7a1d2f	450	}
	451
	452	sub _socket_data {
	453	my ( $self, $handle ) = @_;
	454
8b9d0298	455	my $remote_sockaddr = getpeername($handle);
3150d774	456	my ( undef, $iaddr ) = $remote_sockaddr
	457	? sockaddr_in($remote_sockaddr)
	458	: (undef, undef);
	459
8b9d0298	460	my $local_sockaddr = getsockname($handle);
6c7a1d2f	461	my ( undef, $localiaddr ) = sockaddr_in($local_sockaddr);
6c7a1d2f	462
8b9d0298	463	# This mess is necessary to keep IE from crashing the server
6c7a1d2f	464	my $data = {
8b9d0298	465	peername => $iaddr
	466	? ( gethostbyaddr( $iaddr, AF_INET ) \|\| 'localhost' )
	467	: 'localhost',
	468	peeraddr => $iaddr
	469	? ( inet_ntoa($iaddr) \|\| '127.0.0.1' )
	470	: '127.0.0.1',
	471	localname => gethostbyaddr( $localiaddr, AF_INET ) \|\| 'localhost',
	472	localaddr => inet_ntoa($localiaddr) \|\| '127.0.0.1',
6c7a1d2f	473	};
	474
	475	return $data;
	476	}
	477
1cf1c56a	478	sub _inet_addr { unpack "N*", inet_aton( $_[0] ) }
1cf1c56a	479
45374ac6	480	=head1 SEE ALSO
45374ac6	481
fbcc39ad	482	L<Catalyst>, L<Catalyst::Engine>.
	483
	484	=head1 AUTHORS
	485
	486	Sebastian Riedel, <sri@cpan.org>
	487
	488	Dan Kubb, <dan.kubb-cpan@onautopilot.com>
45374ac6	489
6c7a1d2f	490	Sascha Kiefer, <esskar@cpan.org>
6c7a1d2f	491
4bb8bd62	492	Andy Grundman, <andy@hybridized.org>
4bb8bd62	493
fbcc39ad	494	=head1 THANKS
45374ac6	495
fbcc39ad	496	Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent.
45374ac6	497
	498	=head1 COPYRIGHT
	499
	500	This program is free software, you can redistribute it and/or modify it under
	501	the same terms as Perl itself.
	502
	503	=cut
	504
45374ac6	505	1;